That's because several banks, Bank of America included, temporarily severed communication with the app — and others like it — over security concerns. But it might also be because the financial institutions are feeling a bit threatened. (Video via Bank of America)

Last month, Mint and Quicken lost access to accounts connected to JPMorgan Chase and Wells Fargo. (Video via Intuit)

The Wall Street Journal says Bank of America's move "reflects the rising tension between Wall Street and technology firms over these services, which are popular with consumers and a cause of concern for banks."

That's because these apps have become really popular and they offer additional services for managing finances. They even promote lending companies for things like loans or consolidation. (Video via Intuit)

Those are the same types of offers people might see from banks. So, you can see how the older financial institutions might feel like their toes are being stepped on.

The banks' security concerns with the aggregator apps might seem like a reasonable motive for restricting the flow of financial information. But The Journal says up to this point, no known data breaches have impacted Mint or other aggregators. (Video via Intuit)